Switchable magnification lens and photographic apparatus having the same
US7843646B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 22, 2009 |
| Grant date | Nov 30, 2010 |
| Priority date | — |
| Expiry date | Jul 22, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B15/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A switchable magnification lens used to vary the magnification of an image going to be captured by a camera. The switchable magnification lens includes an outer barrel and a switchable magnification unit detachably arranged in the outer barrel and connected to the zoom lens. The image will be magnified while passing through the switchable magnification unit from a first end to a second end, and the image will be shrunk while passing through the switchable magnification unit from the second end to the first end. The switchable magnification unit is able to change its orientation with respect to the outer barrel. The image will be magnified while the first end is away from the camera and the second end is toward the camera, and the image will be shrunk while the first end is toward the camera and the second end is away from the camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.